Epicyclic gearing

Abstract

An epicyclic gearing includes an annulus comprising a rear bore, an intermediate toothed section, and a stepped front engagement section; a gear assembly comprising front and rear discs, a central hole through the discs, and planet gears rotatably mounted between the discs wherein a portion of the gear assembly is mounted in the toothed section with a rear portion of the teeth of the planet gears meshed with the toothed section; a sun gear comprising outer teeth and having one end passing the bore and the hole to mesh with the teeth of the planet gears; a transmission member comprising a rear ring gear in the engagement section to mesh with a front portion of the teeth of the planet gears and a front drive shaft with a raised key; and a bearing mounted between the ring gear and the engagement section.

1 . An epicyclic gearing system comprising:
 an annulus comprising a rear central bore, an intermediate toothed section, a front annular engagement section, and a shoulder formed between the toothed section and the engagement section;   a gear assembly comprising disc-shaped front and rear plates, a central hole through the front and rear plates, and a plurality of equally spaced apart planet gears each rotatably mounted between the front and rear plates wherein a portion of the gear assembly is mounted in the toothed section with a rear portion of the teeth of the planet gears meshed with the toothed section;   a sun gear comprising teeth on an outer surface thereof, the sun gear having one end passing the bore and the hole to mesh with the teeth of the planet gears;   a transmission member comprising a rear ring gear disposed in the engagement section to mesh with a front portion of the teeth of the planet gears, a front drive shaft, and a raised key on the outer surface of the drive shaft; and   means for reducing friction mounted between the ring gear and the engagement section.   
   
   
       2 . The epicyclic gearing system of  claim 1 , wherein the diameter of the toothed section is equal to that of the ring gear. 
   
   
       3 . The epicyclic gearing system of  claim 1 , wherein the number of the teeth of the toothed section is different from that of the ring gear. 
   
   
       4 . The epicyclic gearing system of  claim 1 , wherein the means for reducing friction comprises a bearing mounted between the ring gear and the engagement section, a front C-rings securely engaged between a front edge of the engagement section and the bearing, and a rear C-ring securely put on the ring gear to urge against the bearing. 
   
   
       5 . The epicyclic gearing system of  claim 1 , wherein the number of the planet gears is three.